From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Specification for testing and inspecting the 20/25 starter motor Bijur Bendix drive.
| Identifier | ExFiles\Box 40\5\ Scan213 | |
| Date | 17th March 1931 | |
| X3587. X.6087 sm. R.R. 20/25 STARTER MOTOR BIJUR BENDIX DRIVE. 9.3.31. X.3587 SPECIFICATION OF TEST & INSPECTION. (a) First the large test gear wheel into which the bendix pinion engages should be locked against rotation. The motor should now be switched on and it should be noted that after engagement, the motor armature spindle still turns slowly, proving that the friction drive is working and allows a certain amount of slipping. On no account allow this condition to exist longer than is sufficient to prove the point, as the friction drive will not stand much slipping. (b) Now unlock the large gear wheel and load up with the friction brake to such a load that the motor takes 130 amperes to turn it steadily. It should then be ascertained, after running in this condition for two minutes, that there is no sign of the friction drive heating. i.e. it is essential that during this test the friction drive should not have slipped appreciably. (c) Now check the bendix gear mechanism to ensure that it is quite free on the thread. (d) Make an inspection that the distance from the front face of the pinion cage to the body of the motor is still within the limits specified by the drawing. Issued 17/3/31. EFC. | ||